Class getDeclaredAnnotations() method in Java with Examples
The getDeclaredAnnotations() method of java.lang.Class class is used to get the declared annotations present in this class. The method returns an array of declared annotations present.
Syntax:
public DeclaredAnnotation[] getDeclaredAnnotations()
Parameter: This method does not accepts any parameter.
Return Value: This method returns an array of declared annotations present.
Below programs demonstrate the getDeclaredAnnotations() method.
Example 1:
import java.util.*;
import java.lang.annotation.*;
@Deprecated
public class Test {
public Object obj;
public static void main(String[] args)
throws ClassNotFoundException
{
try {
Class myClass = Test. class ;
System.out.println(
"Class represented by myClass: "
+ myClass.toString());
System.out.println(
"DeclaredAnnotation of myClass: "
+ Arrays.toString(
myClass.getDeclaredAnnotations()));
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
Class represented by myClass: class Test
DeclaredAnnotation of myClass: [@java.lang.Deprecated()]
Example 2:
import java.util.*;
import java.lang.annotation.*;
@Retention (RetentionPolicy.RUNTIME)
@interface DeclaredAnnotation {
public String key();
public String value();
}
@DeclaredAnnotation (key = "GFG" , value = "GeeksForGeeks" )
public class Test {
public Object obj;
public static void main(String[] args)
throws ClassNotFoundException
{
Class myClass = Test. class ;
System.out.println(
"Class represented by myClass: "
+ myClass.toString());
System.out.println(
"DeclaredAnnotation of myClass: "
+ Arrays.toString(
myClass.getDeclaredAnnotations()));
}
}
|
Output:
Class represented by myClass: class Test
DeclaredAnnotation of myClass: [@DeclaredAnnotation(key=GFG, value=GeeksForGeeks)]
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getDeclaredAnnotations–
Last Updated :
27 Dec, 2019
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